What was found
BRAKES ECAM, AUTO BRAKE FAULT BRAKE. PERFORMED OPERATINAL CHECK AND INSPECTION ON THE BRAKE 3 AND 4. PISTONS ARE MOVING WHILE PRESSING BRAKES. PERFORMED BITE TEST ON BSCU IAW TASK 32-46-00-740-001-A. CHAN 1 AND CHAN 2 NORMAL BRAKING TEST SHOWS TACHOMETER3 (20GG ) MIGHT BE THE PROBLEM. FURTHER TROUBLESHOOTING REQUIRED. REMOVED AND REPLACED #3 BRAKE TACHOMETER. NO HELP AFTER OPS CHECK. SUSPECT WIRING PROBLEM REMOVED NR 3 AND NR 4 HUBCAPS FOR TROUBLESHOOT WHILE T/SING, FOUND SHORT FROM 7J (10GG BSCU)-- C (20GG TACH WHEEL 3). DEPINNED, INSPECTED PIN AND CRIMP. LOOKS GOOD. REPINNED. SUSPECT PROBLEM AT JUNCTION BOX, LOCATED RIGHT ABOVE WHEEL. IAW ASM 32-42-02 SCH 02, PAGE 35. T/S PER FIM 32-42-00-810-821-A. PERFORMED WIRING CHECKS AND FOUND TERMINAL BLOCK 1833VT POSITION (46) AT FAULT. R & R TB 1833VT, POSITION (46) REF. AWM 32-42-07. OPS CHECK IS GOOD. PERFORMED BSCU SYSTEM CHECK FOR CH.1 AND CH.2, SYSTEM TEST GOOD, GROUND SCAN GOOD. NO DEFECTS NOTED. LAND TEST ACCOMPLISHED, LAND TEST IS GOOD, AIRCRAFT REMAINS FULL CAT CAPABLE.